NCP1237AD65R2G SOP-7 SOIC7 37A65 SOP7
Timer−Based Transient Power and Overload
Protections with Auto−Recovery (Option B) or Latched
(Option A) Operation
• High−Voltage Current Source with DSS with Built−in
Brown−out and Line Overvoltage Protections
• Fixed−Frequency Current−Mode Operation with
Built−in Ramp Compensation
• Frequency Jittering for a Reduced EMI Signature
• Adjustable Overpower Compensation
• Latch−off Input for Severe Fault Conditions, with
Direct Connection of an NTC for Overtemperature
Protection (OTP)
• Protection Against Winding Short−Circuit
• Frequency Foldback transitioning into Soft−Skip for
Improved Performance in Standby
65 kHz Oscillator (100 kHz and 133 kHz Versions
Available Upon Request)
• VCC Operation up to 28 V
• Increased Precision on Critical Parameters
• ±1.0 A Peak Drive Capability
• 4.0 ms Soft−Start
• Internal Thermal Shutdown with Hysteresis
• These Devices are Pb−Free, Halogen Free/BFR Free
and are RoHS Compliant*
Typical Applications
• ac−dc Adapters for Notebooks, LCD, and Printers
• Offline Battery Chargers
• Consumer Electronic Power Supplies
• Auxiliary/Housekeeping Power Supplies
102,000 تومان
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توضیحات
NCP1237AD65R2G SOP-7 SOIC7 37A65 SOP7
Fixed Frequency Current
Mode Controller for Flyback
Converters
The NCP1237 is a new generation of the NCP12xx fixed−frequency
current−mode controllers featuring Dynamic Self−Supply (DSS),
pin−to−pin compatible with the previous generation.
The DSS function greatly simplifies the design of the auxiliary supply
and the VCC capacitor by activating the internal startup current source to
supply the controller during transients.
Due to its proprietary Soft−Skip™ mode combined with frequency
foldback, the controller exhibits excellent efficiency in light load
condition while still achieving very low standby power consumption.
This Soft−Skip feature also dramatically reduces the risk of acoustic
noise, which enables the use of inexpensive transformers and
capacitors in the clamping network.
توضیحات تکمیلی
| Package |
SOP-7 |
|---|---|
| کیفیت |
original |
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